MS Windows Server 2019
Windows Server 2019 is the operating system that bridges on-premises environments with Azure, adding additional layers of security while helping you modernize your applications and infrastructure.
MS Windows 10 Professional
Windows 10 Pro comes with built-in security features, including firewall and other internet protections to help safeguard against viruses, malware and ransomware.
Red Hat Enterprise Linux is the world's leading enterprise Linux platform.
It's an open source operating system (OS). It's the foundation from which you can scale existing apps and roll out emerging technologies- across bare-metal, virtual, container and all types of cloud environments.